The couple met at Harvard and have been together for more than nine years.

Published at 6:31 PM PDT on May 19, 2012 | Updated at 7:26 AM PDT on May 21, 2012

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Mark Zuckerberg (right) poses for a photo with Priscilla Chan (left) during a small wedding ceremony in Palo Alto, Calif. This photo was posted to Mark Zuckerberg's Facebook page on May 19, 2012.

Facebook founder and CEO Mark Zuckerberg has updated his status to "married."

Zuckerberg and 27-year-old Priscilla Chan tied the knot at a small ceremony at his Palo Alto, Calif., home Saturday, capping a busy week for the couple.

Zuckerberg took his company public in one of the most anticipated moves in Wall Street history Friday. And Chan graduated from medical school at the University of California, San Francisco, on Monday, the same day Zuckerberg turned 28.

A company spokeswoman said Zuckerberg designed the ring featuring "a very simple ruby" that he designed himself.